title: Patient-level vs group-level data to adjust meta-analysis on transfusion and mortality--reply.
authors.forename: Saurav
authors.initials: S
authors.lastname: Chatterjee
authors.forename: Jorn
authors.initials: J
authors.lastname: Wetterslev
authors.forename: Debabrata
authors.initials: D
authors.lastname: Mukherjee
mesh_terms: D006801:Humans; D009203:Myocardial Infarction / Q000401:mortality*; D065227:Transfusion Reaction